Hi guys, wondering if you could help me out with a few questions I have!
1)Are conjugated proteins counted as apart of the protein’s quaternary structure?
2)Are lipids made up of chains of glycogen and fatty acids? Or are fatty acids and glycerols arranged in some other form?
3)Are proteins in the plasma membrane only of the quaternary structure?
4)Does tRNA only have three bases in its sequence? The photo attached is the concerned question from my textbook
Thank you!
1) Do you mean "as a part*" instead of "as apart"? If you do, you should know that not all conjugated proteins are considered to have quarternary structure. Collagen is an example of a conjugated protein that does have a quarternary structure. Conjugated proteins have a prosthetic group (non-protein part) attached to them, meaning upon hydrolysis they would yield another chemical component other than amino acids.
2) Lipids aren't linked together to form 'chains of glycogen and fatty acids'. Proteins are examples of long chains of amino acids as evident in their primary structure. Lipids have smaller molecules that aren't exactly structured in the form of repetitive chains.
3) I think you mean "do proteins in the plasma membrane have a quarternary structure?", as proteins cannot only have a quarternary structure! So, not all membrane proteins have a quarternary structure. I believe most of them have tertiary structures.
4) RNA has 4 bases in general. It's just that Thymine from DNA is replaced by Uracil in RNA. So RNA would have Adenine, Uracil, Guanine and Cytosine.
As for the photo, it won't be possible to tell what type of RNA it is, unless we know its function. Hope that helps, and as always, someone please correct me if I was incorrect on any of the above.